Index: third_party/WebKit/Source/modules/csspaint/CSSPaintDefinition.cpp |
diff --git a/third_party/WebKit/Source/modules/csspaint/CSSPaintDefinition.cpp b/third_party/WebKit/Source/modules/csspaint/CSSPaintDefinition.cpp |
index 339962f6cd6147786d9d8736a493e3331167b866..02835412b47b2897d9f45925329a2b22236970d7 100644 |
--- a/third_party/WebKit/Source/modules/csspaint/CSSPaintDefinition.cpp |
+++ b/third_party/WebKit/Source/modules/csspaint/CSSPaintDefinition.cpp |
@@ -5,6 +5,15 @@ |
#include "modules/csspaint/CSSPaintDefinition.h" |
#include "bindings/core/v8/ScriptState.h" |
+#include "bindings/core/v8/V8Binding.h" |
+#include "bindings/core/v8/V8BindingMacros.h" |
+#include "bindings/core/v8/V8ObjectConstructor.h" |
+#include "core/dom/ExecutionContext.h" |
+#include "modules/csspaint/Geometry.h" |
+#include "modules/csspaint/PaintRenderingContext2D.h" |
+#include "platform/graphics/ImageBuffer.h" |
+#include "platform/graphics/PaintGeneratedImage.h" |
+#include "platform/graphics/RecordingImageBufferSurface.h" |
namespace blink { |
@@ -24,4 +33,62 @@ CSSPaintDefinition::~CSSPaintDefinition() |
{ |
} |
+PassRefPtr<Image> CSSPaintDefinition::paint(const IntSize& size) |
+{ |
+ ScriptState::Scope scope(m_scriptState.get()); |
+ |
+ maybeCreatePaintInstance(); |
+ |
+ v8::Isolate* isolate = m_scriptState->isolate(); |
+ v8::Local<v8::Object> instance = m_instance.newLocal(isolate); |
+ |
+ // We may have failed to create an instance class, in which case produce an |
+ // invalid image. |
+ if (isUndefinedOrNull(instance)) |
+ return nullptr; |
+ |
+ PaintRenderingContext2D* renderingContext = PaintRenderingContext2D::create( |
+ ImageBuffer::create(adoptPtr(new RecordingImageBufferSurface(size)))); |
+ Geometry* geometry = Geometry::create(size); |
+ |
+ v8::Local<v8::Value> argv[] = { |
+ toV8(renderingContext, m_scriptState->context()->Global(), isolate), |
+ toV8(geometry, m_scriptState->context()->Global(), isolate) |
+ }; |
+ |
+ v8::Local<v8::Function> paint = m_paint.newLocal(isolate); |
+ |
+ v8::TryCatch block(isolate); |
+ block.SetVerbose(true); |
+ |
+ V8ScriptRunner::callFunction(paint, m_scriptState->getExecutionContext(), instance, 2, argv, isolate); |
+ |
+ // The paint function may have produced an error, in which case produce an |
+ // invalid image. |
+ if (block.HasCaught()) { |
+ return nullptr; |
+ } |
+ |
+ return PaintGeneratedImage::create(renderingContext->imageBuffer()->getPicture(), size); |
+} |
+ |
+void CSSPaintDefinition::maybeCreatePaintInstance() |
+{ |
+ if (m_didCallConstructor) |
+ return; |
+ |
+ DCHECK(m_instance.isEmpty()); |
+ |
+ v8::Isolate* isolate = m_scriptState->isolate(); |
+ v8::Local<v8::Function> constructor = m_constructor.newLocal(isolate); |
+ DCHECK(!isUndefinedOrNull(constructor)); |
+ |
+ v8::Local<v8::Object> paintInstance; |
+ if (V8ObjectConstructor::newInstance(isolate, constructor).ToLocal(&paintInstance)) { |
+ m_instance.set(isolate, paintInstance); |
+ } |
+ |
+ m_didCallConstructor = true; |
+} |
+ |
} // namespace blink |